CN103525143A - Preparation process of high-temperature-resistant coating for power plant chimney - Google Patents
Preparation process of high-temperature-resistant coating for power plant chimney Download PDFInfo
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- CN103525143A CN103525143A CN201310485733.4A CN201310485733A CN103525143A CN 103525143 A CN103525143 A CN 103525143A CN 201310485733 A CN201310485733 A CN 201310485733A CN 103525143 A CN103525143 A CN 103525143A
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Abstract
The invention discloses a preparation process of high-temperature-resistant coating for a power plant chimney. The preparation process mainly comprises three steps of preparing phthalic acid trimethyl silicon alcohol ester, preparing organic silicon modified unsaturated vinyl resin and preparing the high-temperature-resistant coating for the power plant chimney. The high-temperature-resistant coating for the power plant chimney, prepared from the self-made organic silicon modified unsaturated vinyl resin, can resist 220-DEG C continuous high temperature, has the elongation percentage of 126% and can resist acid and alkali. The problems that the power plant chimney has low long-term high-temperature resistance, high shrinking percentage during curing, and the like in the prior art are solved through the organic silicon modified unsaturated vinyl resin.
Description
Technical field
The present invention relates to filed of high temperature, particularly a kind of with making the processing method of organic-silicon-modified unsaturated ethylene thiazolinyl resin for chimney of electric plant high-temperature resistant coating by oneself.
Background technology
At present, power plant's Steel Stack generally adopts vinyl glass-flake coating, and current unsaturated polyester while solidifying shrinking percentage up to 11%, produce internal stress and undermine sticking power, and high thermal resistance is poor, the current working temperature of chimney of electric plant is 150 ℃ of left and right, reach in short-term 200 ℃, and current unsaturated polyester 150 ℃ of environment embrittlement about the second half year, ftracture, come off, so at present chimney of electric plant maintenance is frequent, maintenance cost is high, has greatly affected economic benefit.
Summary of the invention
The object of the invention is to for the existing power plant Steel Stack coating shrinking percentage described in background technology high, poor adhesive force, high thermal resistance is poor, and easily embrittlement, the problem such as ftracture, come off, provide a kind of chimney of electric plant high-temperature resistant coating preparation technology that can solve foregoing problems.
Realize object technical scheme of the present invention as follows:
A high-temperature resistant coating preparation technology, it comprises the following steps:
Step 1, by mole input reactors such as Tetra hydro Phthalic anhydride and trimethyl silanols, pass into nitrogen, be slowly warming up to 48 ℃～52 ℃, start stirring, be warming up to 58 ℃～62 ℃, cooling after being incubated 1 hour, blowing makes phthalic acid trimethyl silicane alcohol ester;
Step 2,2 moles of ethylene glycol, 5 mole of glycerin, 5 moles of self-control phthalic acid trimethyl silicane acid esters, 3 moles of horse acid anhydrides, 3 moles of phthalic anhydrides are dropped into reactors, add a little dimethylbenzene to make dewatering agent, be warming up to 118 ℃～125 ℃, be incubated after 2 hours, continue to be warming up to 200 ℃～210 ℃, then dehydration, after reaction finishes, be cooled to 70 ℃～80 ℃, with vinylbenzene, be diluted to solid part of 60%, be then cooled to normal temperature, make organic-silicon-modified unsaturated ethylene thiazolinyl resin, add a small amount of stopper, filter and package;
Step 3, prepare chimney of electric plant high-temperature resistant coating, desired raw material and weight ratio are as follows:
Accurately take 0.8 part～1.2 parts of 5 parts～12 parts, 5 parts～12 parts of 12 parts～18 parts of 12 parts～18 parts of 45～55 parts of organic-silicon-modified unsaturated ethylene thiazolinyl resins, iron oxide reds, glass flakes, silica powders, ferrophosphorus powder making in step 2 and aerosils, above-mentioned materials is dropped in a mixing bowl and stirred, a mixing bowl leads to water quench, after high speed dispersion 1 hour, by vinylbenzene adjusting coating viscosity, make chimney of electric plant high-temperature resistant coating, then filter and package.
Stopper in the step 2 of such scheme is selected Resorcinol.
In the step 3 of such scheme, desired raw material and weight proportion are: 1 part of 50 parts of organic-silicon-modified unsaturated ethylene thiazolinyl resins, 15 parts of iron oxide reds, 15 parts of glass flakes, 9 parts of silica powders, 10 parts, ferrophosphorus powder and aerosil.
Modified vinyl resin high-temperaure coating prepared by chimney of electric plant high-temperature resistant coating preparation technology of the present invention, can for a long time resistance to 220 ℃ of high temperature, and elongation is 126%, acid-fast alkali-proof.By organic-silicon-modified unsaturated ethylene thiazolinyl resin, solved in prior art that the long-term high thermal resistance of chimney of electric plant is poor, the problem such as shrinking percentage height while solidifying, through practice, prove, the modified vinyl resin high-temperature resistant coating of my company exploitation is used after 2 years in order in chimney of electric plant, reduce frequency of maintenance, increased economic benefit.
Embodiment
Embodiment 1
A high-temperature resistant coating preparation technology, it comprises the following steps:
Step 1, by mole input reactors such as Tetra hydro Phthalic anhydride and trimethyl silanols, pass into nitrogen, be slowly warming up to 48 ℃～52 ℃, start stirring, be warming up to 58 ℃～62 ℃, cooling after being incubated 1 hour, blowing makes phthalic acid trimethyl silicane alcohol ester;
Step 2,2 moles of ethylene glycol, 5 mole of glycerin, 5 moles of self-control phthalic acid trimethyl silicane acid esters, 3 moles of horse acid anhydrides, 3 moles of phthalic anhydrides are dropped into reactors, add a little dimethylbenzene to make dewatering agent, be warming up to 118 ℃～125 ℃, be incubated after 2 hours, continue to be warming up to 200 ℃～210 ℃, then dehydration, after reaction finishes, be cooled to 70 ℃～80 ℃, with vinylbenzene, be diluted to solid part of 60%, be then cooled to normal temperature, make organic-silicon-modified unsaturated ethylene thiazolinyl resin, add a small amount of stopper, filter and package;
Reaction equation is as follows:
In aforesaid equation
A represents ethylene glycol, and molecular formula is: OHCH
2cH
2oH A ' molecular formula is: OHCH
2cH
2o-, G represents glycerine, molecular formula is:
g ' molecular formula is:
b representative self-control phthalic acid trimethyl silicane acid esters, molecular formula is:
b ' molecular formula is:
m represents horse acid anhydride, and molecular formula is:
m ' molecular formula is:
p represents phthalic anhydride, and molecular formula is:
p ' molecular formula is:
Step 3, prepare chimney of electric plant high-temperature resistant coating, desired raw material and weight ratio are as follows:
Accurately take 0.8 part～1.2 parts of 5 parts～12 parts, 5 parts～12 parts of 12 parts～18 parts of 12 parts～18 parts of 45～55 parts of organic-silicon-modified unsaturated ethylene thiazolinyl resins, iron oxide reds, glass flakes, silica powders, ferrophosphorus powder making in step 2 and aerosils, above-mentioned materials is dropped in a mixing bowl and stirred, a mixing bowl leads to water quench, after high speed dispersion 1 hour, by vinylbenzene adjusting coating viscosity, make chimney of electric plant high-temperature resistant coating, then filter and package.
Embodiment 2
As preferred embodiment, in the step 3 of such scheme, desired raw material and weight proportion are: 1 part of 50 parts of organic-silicon-modified unsaturated ethylene thiazolinyl resins, 15 parts of iron oxide reds, 15 parts of glass flakes, 9 parts of silica powders, 10 parts, ferrophosphorus powder and aerosil.
The chimney of electric plant high-temperature resistant coating detected result making by technique of the present invention:
| Sequence number | Test item | Assay | Test method standard |
| 1 | Thermotolerance (220 ℃, 1h) | Without steam bubble, wrinkling | GB/T1735-2009 |
| 2 | Resistance to sulfuric acid (30% normal temperature dipping 72h) | Non-corroding, nothing come off | HG/T2454-2006 |
| 3 | Resistance to sodium-chlor (30% normal temperature dipping 72h) | Non-corroding, nothing come off | HG/T2454-2006 |
Embodiment 3
Particularly, the stopper in the step 2 of above-mentioned two kinds of embodiments is selected Resorcinol, and the consumption of stopper is about the thousandth of organic-silicon-modified unsaturated ethylene thiazolinyl weight resin.
Claims (3)
1. a chimney of electric plant high-temperature resistant coating preparation technology, is characterized in that it comprises the following steps:
Step 1, by mole input reactors such as Tetra hydro Phthalic anhydride and trimethyl silanols, pass into nitrogen, be slowly warming up to 48 ℃～52 ℃, start stirring, be warming up to 58 ℃～62 ℃, cooling after being incubated 1 hour, blowing makes phthalic acid trimethyl silicane alcohol ester;
Step 2,2 moles of ethylene glycol, 5 mole of glycerin, 5 moles of self-control phthalic acid trimethyl silicane acid esters, 3 moles of horse acid anhydrides, 3 moles of phthalic anhydrides are dropped into reactors, add a little dimethylbenzene to make dewatering agent, be warming up to 118 ℃～125 ℃, be incubated after 2 hours, continue to be warming up to 200 ℃～210 ℃, then dehydration, after reaction finishes, be cooled to 70 ℃～80 ℃, with vinylbenzene, be diluted to solid part of 55%～60%, be then cooled to normal temperature, make organic-silicon-modified unsaturated ethylene thiazolinyl resin, add a small amount of stopper, filter and package;
Step 3, prepare chimney of electric plant high-temperature resistant coating, desired raw material and weight ratio are as follows:
Accurately take 0.8 part～1.2 parts of 5 parts～12 parts, 5 parts～12 parts of 12 parts～18 parts of 12 parts～18 parts of 45～55 parts of organic-silicon-modified unsaturated ethylene thiazolinyl resins, iron oxide reds, glass flakes, silica powders, ferrophosphorus powder making in step 2 and aerosils, above-mentioned materials is dropped in a mixing bowl and stirred, a mixing bowl leads to water quench, after high speed dispersion 1 hour, by vinylbenzene adjusting coating viscosity, make chimney of electric plant high-temperature resistant coating, then filter and package.
2. chimney of electric plant high-temperature resistant coating preparation technology according to claim 1, is characterized in that: the stopper in step 2 is selected Resorcinol.
3. chimney of electric plant high-temperature resistant coating preparation technology according to claim 1, is characterized in that: in step 3, desired raw material and weight proportion are: 1 part of 50 parts of organic-silicon-modified unsaturated ethylene thiazolinyl resins, 15 parts of iron oxide reds, 15 parts of glass flakes, 9 parts of silica powders, 10 parts, ferrophosphorus powder and aerosil.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310485733.4A CN103525143B (en) | 2013-10-17 | 2013-10-17 | Preparation process of high-temperature-resistant coating for power plant chimney |
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| CN201310485733.4A CN103525143B (en) | 2013-10-17 | 2013-10-17 | Preparation process of high-temperature-resistant coating for power plant chimney |
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| CN103525143A true CN103525143A (en) | 2014-01-22 |
| CN103525143B CN103525143B (en) | 2015-06-17 |
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| CN111269650B (en) * | 2020-04-10 | 2021-08-03 | 厦门中构新材料科技股份有限公司 | Organic silicon high-temperature-resistant anticorrosive paint and preparation method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1119589B1 (en) * | 1998-10-09 | 2003-12-17 | WKP Württembergische Kunststoffplatten-Werke GmbH & Co. KG | Stratified material and a method for producing the same |
| CN101074338A (en) * | 2006-05-18 | 2007-11-21 | 中国石油天然气集团公司 | Acid-alkali-corrosive-resisting oil-pipe coating and its production |
| CN101445375A (en) * | 2008-12-24 | 2009-06-03 | 本钢板材股份有限公司 | Composition for producing ladle nozzle sealing ring |
| CN101722478A (en) * | 2010-01-21 | 2010-06-09 | 厦门致力金刚石工具有限公司 | Diamond dry grinding disc and manufacturing method thereof |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1119589B1 (en) * | 1998-10-09 | 2003-12-17 | WKP Württembergische Kunststoffplatten-Werke GmbH & Co. KG | Stratified material and a method for producing the same |
| CN101074338A (en) * | 2006-05-18 | 2007-11-21 | 中国石油天然气集团公司 | Acid-alkali-corrosive-resisting oil-pipe coating and its production |
| CN101445375A (en) * | 2008-12-24 | 2009-06-03 | 本钢板材股份有限公司 | Composition for producing ladle nozzle sealing ring |
| CN101722478A (en) * | 2010-01-21 | 2010-06-09 | 厦门致力金刚石工具有限公司 | Diamond dry grinding disc and manufacturing method thereof |
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